Java 在Intellij IDEA中未正确解析user.dir

我将

@Value

注释用于Spring Boot，但它似乎并不像我预期的那样完全工作

在我的

@配置

文件中：

@Value("${installationDirectory}")
private File m_installationDirectory;

在我的

应用程序.properties中

：

installationDirectory=${user.dir}/install

<!-- Turn on filtering by default for application properties -->
<resources>
    <resource>
        <directory>src/main/resources</directory>
        <filtering>true</filtering>
        <includes>
            <include>**/application.yml</include>
            <include>**/application.properties</include>
        </includes>
    </resource>
    <resource>
        <directory>src/main/resources</directory>
        <excludes>
            <exclude>**/application.yml</exclude>
            <exclude>**/application.properties</exclude>
        </excludes>
    </resource>
</resources>

启动：

public static void main( String[] args ) throws IOException
{
    logger.info( "Starting application" );
    logger.info( "Java version: {}", System.getProperty( "java.version" ) );
    logger.info( "Java home   : {}", System.getProperty( "java.home" ) );
    logger.info( "Operation System: {} {} ({})", System.getProperty( "os.name" ), System.getProperty( "os.version" ), System.getProperty( "os.arch" ) );
    logger.info( "Working dir : {}", System.getProperty( "user.dir" ) );

    SpringApplication springApplication = new SpringApplication( Main.class );
    springApplication.setShowBanner( false );
    ConfigurableApplicationContext context = springApplication.run( args );
}

启动时的输出：

2014-05-14 09:36:05 INFO [main] Main - Starting application
2014-05-14 09:36:05 INFO [main] Main - Java version: 1.7.0_55
2014-05-14 09:36:05 INFO [main] Main - Java home   : /Library/Java/JavaVirtualMachines/jdk1.7.0_55.jdk/Contents/Home/jre
2014-05-14 09:36:05 INFO [main] Main - Operation System: Mac OS X 10.9.2 (x86_64)
2014-05-14 09:36:05 INFO [main] Main - Working dir : /Users/wdb/Work/netty-test
2014-05-14 09:36:05 INFO [main] Main - Starting Main on bruk-00007-l.zone2.flir.net with PID 98296 (/Users/wdb/Work/netty-test/flux-server/flux-server-application/target/classes started by wdb)
2014-05-14 09:36:05 DEBUG [main] Main - Running with Spring Boot v1.0.1.RELEASE, Spring v4.0.3.RELEASE
2014-05-14 09:36:08 INFO [main] LoggingToFileMessageRepositoryDecorator - Storing messages in /Users/wdb/Library/Caches/IntelliJIdea13/compile-server/install/messages
2014-05-14 09:36:08 INFO [main] OnDiskSingleJvmImageRepository - Storing images in folder /Users/wdb/Library/Caches/IntelliJIdea13/compile-server/install/images
2014-05-14 09:36:08 INFO [main] TrafficDataIntegratorsManagerImpl - Created 3 integrators for 1 sources in 1 ms
2014-05-14 09:36:09 INFO [main] Main - Started Main in 3.928 seconds (JVM running for 4.428)

请注意，如果我只打印系统属性

user.dir

，它将指向

/Users/wdb/Work/netty test

。然而，当

installationDirectory

值被注入到Springbean中时，路径似乎是

/Users/wdb/Library/Caches/IntelliJIdea13/compile server/install/

，而不是预期的

/Users/wdb/Work/netty test/install

---

请注意，我在运行IntelliJ 13.1.2时，在我的运行配置中将“工作目录”设置为

/Users/wdb/Work/netty test

。

我发现了问题。我和Maven在一起。默认情况下，

spring boot starter父级

为

应用程序启用了资源筛选。属性

：

installationDirectory=${user.dir}/install

<!-- Turn on filtering by default for application properties -->
<resources>
    <resource>
        <directory>src/main/resources</directory>
        <filtering>true</filtering>
        <includes>
            <include>**/application.yml</include>
            <include>**/application.properties</include>
        </includes>
    </resource>
    <resource>
        <directory>src/main/resources</directory>
        <excludes>
            <exclude>**/application.yml</exclude>
            <exclude>**/application.properties</exclude>
        </excludes>
    </resource>
</resources>

然后将

application.properties

文件更改为：

installationDirectory=\${user.dir}/install

---

在此之后，一切正常。

启用调试（或跟踪）日志记录，查看

user.dir

是如何解决的。我怀疑服务器启动时，

user.dir

属性被覆盖，并且它指向部署/读取应用程序的目录。调试显示：

在[applicationConfig:[classpath:/application.properties]]中找到了[String]类型的键“installationDirectory”值“/Users/wdb/Library/Caches/IntelliJIdea13/compile server/install”

是的，但是它还应该告诉您一些关于

user.dir

属性的信息。可能在加载

应用程序.properties

.AFAIK时，无法从JVM中设置“user.dir”，因此您的进程不会在您期望的目录中启动。也许使用IDEA的人可以帮助您找到正确的设置（Eclipse的行为完全符合您的预期）。设置

IDEA Run Config

以添加参数-

Duser.dir=specificdirectory

如何？